26 Jul
2012
26 Jul
'12
11:51 a.m.
On 07/25/2012 03:23 PM, Tony Duell wrote:
I cna atually think of a reason. In the UK, 'mfd' or 'MFD' was commonly
used as an abreviation for microfarad (not millifarad or megafarad). I
think using mF on a schemtic for millifarads could cause confustion
As for the capacitor, I think you said the
original was 4000uF [1]. I
would fit a 4700uF, the extra capacitance won't matter and it'll be
easier to get.
[1] Why this is _never_ [2] written as 4mF is beyond me
[2] Actually, 'never' is too strong. I am pretty sure I've seen at least
one schematic that does thta, maybe an HP one.
I almost always normalize values in my designs. I don't know why more
people don't. This applies to everything though, not just component values. Why would someone say "10,000mL"
instead of "10L"? That's
something about society that I've always wondered about.
When I was at school, an idiot teacher (I rarely had any other kind)
assured me that the unit of pressure was the millibar, and that it was
incorrect to call 1000 millibars 1 bar. I didn't believe it then, I
certainly don't believe it now.
-tony